JP2008296925A - Paper container for beverage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper container for beverage having high stability of a straw when the straw is inserted in an opening part having the outside diameter larger than that of the straw, and capable of suppressing generation of paper powder as the straw is inserted. <P>SOLUTION: The paper container for beverage has a container body formed of a paper as a raw material while a straw 3 can be detachably attached thereto, the straw 3 detached from the container body can be inserted, and the opening part 8 having the outside diameter larger than that of the straw 3 is formed in a top wall 7 of the container body. A part of a peripheral edge 9 of the opening part 8 is constituted of a supporting part 10 for supporting the straw 3 from the outer side in the radial direction of the straw 3, and the supporting part 10 has a contact surface 10a in contact with the straw 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a beverage paper container having an opening into which an attached straw can be inserted.

  2. Description of the Related Art Beverage paper containers are widely known in which a straw for a user to drink a beverage contained therein is attached and an opening having a size into which the straw can be inserted is formed. For example, there is one in which a circular opening is provided in accordance with an elongated cylindrical straw attached to the container body, and the hole diameter of the opening is substantially equal to the outer diameter of the straw. There is also a beverage paper container made of paper that has an opening larger than the outer diameter of the straw to simulate the drinking mouth of a drinking can and can drink beverage directly from the container without using the attached straw Are known. Further, the opening into which the straw is inserted is composed of a portion having a diameter smaller than the outer diameter of the straw and a portion having a larger diameter, and the small diameter portion is pushed and bent into the container by insertion of the straw to form a locking portion. And the drink paper container comprised so that a space | gap might be formed between the outer surface of the inserted straw and a large diameter part is known (patent document 1).

Japanese Utility Model Publication No. 5-34126

  In the case of a beverage paper container having an opening larger than the outer diameter of the straw, there is a problem in stability when a straw is inserted into the opening. Therefore, as in Patent Document 1, a part of the opening is made a part having a diameter smaller than the outer diameter of the straw, the small diameter part is pushed and bent into the container by inserting the straw, and the straw is formed by the pushed and bent small diameter part. It is also possible to support. However, an excessive force is likely to be applied to the straw at the time of insertion along with the pushing and bending of the small-diameter portion, and paper dust is likely to be generated from the end portion along with the pushing and bending of the small-diameter portion. Patent Document 1 discloses a technique for slitting a small-diameter portion in order to make it easier to push and bend the small-diameter portion. However, paper dust is generated from the slit, and the paper dust increases compared to the case where no slit is inserted. There is a risk.

  Therefore, the present invention provides a beverage paper container that can support a straw when the straw is inserted into an opening larger than the outer diameter of the straw, and that can suppress the generation of paper dust associated with the insertion of the straw. For the purpose.

  Hereinafter, the beverage paper container of the present invention will be described. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

  The beverage paper container of the present invention is provided with a container body (2) which is attached in a removable state with a straw (3) for a user to drink a beverage contained therein, and is formed from paper as a raw material, In the beverage paper container (1) in which the straw removed from the container body can be inserted and the opening (8, 15, 20) larger than the outer diameter (D) of the straw is formed in the container body, A part of the peripheral edge (9, 16, 23) of the opening is configured as a support (10, 17, 24) that can support the straw from the radial outside of the straw, and the support contacts the straw By having the contact surfaces (10a, 17a, 24a) to be solved, the above-described problems are solved.

  According to this beverage paper container, a part of the opening formed in the container body functions as a support part that supports the straw inserted into the opening part, so that the straw can be supported by the support part. Since the opening is larger than the outer diameter of the straw, the portion other than the portion functioning as the support portion is not in contact with the straw. As a result, a gap is formed between the outer peripheral surface of the straw and the opening. Since the support portion has a contact surface that comes into contact with the straw when the straw is supported, the support portion is not pushed and bent into the container body as the straw is inserted. Therefore, generation of paper dust from the end face of the opening can be suppressed without applying an excessive force when inserting the straw. In the present invention, the opening larger than the outer diameter of the straw means that when the straw is tubular, the opening has an opening area larger than the area of a circle having the same diameter as the outer diameter.

  In one aspect of the present invention, the contact surface of the support portion may be configured to continuously contact the straw along the outer periphery of the straw. According to this aspect, since the contact between the contact surface of the support portion and the straw is along the outer periphery of the straw, the straw is not easily displaced with respect to the opening, and the stability of the straw is improved.

  In one aspect of the present invention, the support portion can support the straw from one of the radially outer sides of the straw and the other opposite side, and has a pair of support portions that have the contact surfaces in contact with the straw. The contact surfaces of the pair of support portions may be configured to face each other when the straw is supported and to partially contact the outer peripheral surface of the straw. According to this aspect, since the pair of support portions are supported from one of the straws and the other of the opposite sides, the stability of the straw is improved. In addition, since the contact between each contact surface of the pair of support portions and the straw is a point contact, an allowable range for an error in the outer diameter of the straw is expanded as compared with a configuration in which the contact is made with the straw in a wide range. Thereby, since a margin arises in the dimensional accuracy of an attached straw and the dimensional accuracy of an opening part, manufacturing cost can be reduced. Furthermore, since it is not crushed into the inside of a container main body with insertion of a straw, generation | occurrence | production of paper dust can be suppressed. In this aspect, the pair of supports is arranged such that contact portions (P1 to P4: FIG. 7) between the outer peripheral surfaces of the straws and the contact surfaces of the pair of support portions are arranged at equal intervals in the circumferential direction of the straws. Each contact surface of a part may be constituted. In this case, the stability of the straw is enhanced by arranging the contact portions at equal intervals in the circumferential direction of the straw.

  In one aspect of the present invention, a film-like member (13) that closes the opening from the inside of the container body, the container body, and the opening so as to close the opening from the outside of the container body A cover member (12) attached to the exposed portion (13a) of the film-like member exposed to the outside of the container body, and when the cover member is peeled from the container body, the exposed portion is The mechanical strength of the film-like member and the adhesive strength between the lid member and the exposed portion may be set so as to be separated from the film-like member in a state of being attached to the lid member. According to this aspect, in the unopened state before the lid member is peeled off, the opening is closed with the film-like member from the inside of the container main body, so that the inner beverage permeates from the peripheral edge of the opening and the peripheral edge is It is prevented from becoming dirty. Moreover, since contact with a peripheral part and a drink is interrupted, it is effective also in terms of hygiene.

  As described above, according to the beverage paper container of the present invention, the straw can be supported by the support portion when the straw is inserted. In addition, since the support portion has a contact surface that comes into contact with the straw when the straw is supported, it is not pushed and bent into the container body by the insertion of the straw, so that an excessive force is not applied when the straw is inserted. Generation of paper dust from each contact surface can be suppressed.

(First form)
FIG. 1 is a perspective view showing a beverage paper container according to one embodiment of the present invention. Beverage paper containers (hereinafter referred to as paper containers) 1 contain beverages such as soft drinks and milk drinks. The paper container 1 includes a container body 2 in which a predetermined amount of beverage is stored, and the container body 2 is attached with a straw 3 for a user to drink the beverage. The straw 3 is housed in a transparent sachet 4, and the sachet 4 is attached to the side of the container body 2. When using the straw 3, the straw 3 is peeled off from the container body 2 after the sachet 4 is peeled off, or by breaking the sachet 4 with the sachet 4 attached to the container body 2. The container body 2 can be removed.

  The container body 2 is formed by a known method using a predetermined container base paper as a material. At least the inner surface of the container body 2 is covered with a coating layer (for example, a polyethylene layer) for increasing water resistance. The container body 2 has a tapered cylindrical side wall 5, and a bottom wall 6 and an upper wall 7 are joined to the side wall 5 by a known method. Thereby, the container main body 2 is formed in a truncated cone shape as a whole. An opening 8 that functions as a drinking mouth or for insertion of the straw 3 is formed in a substantially central portion of the upper wall 7 of the container body 2, and the opening 8 is covered with a lid tape 12 as a lid member. It is blocked by being affixed to the outer surface of the wall 7.

  FIG. 2 shows details of the straw 3 shown in FIG. The straw 3 is configured as a well-known telescopic straw. The straw 3 is configured by combining a hollow cylindrical base portion 3a that can be received by a user and an expansion / contraction portion 3b that expands and contracts with respect to the base portion 3a. The base 3a of the straw 3 is the thickest. The expansion / contraction part 3b is accommodated inside the base part 3a, and expands and contracts in two stages as shown by the imaginary line in FIG. The outer diameter D of the base portion 3a corresponds to the outer diameter according to the present invention.

  FIG. 3 is an enlarged plan view showing a part of the upper wall 7 in a state where the straw 3 is inserted into the opening 8, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. As shown in FIG. 3, an opening 8 larger than the outer diameter D of the straw 3 is formed in the upper wall 7. That is, the opening 8 has an opening area larger than the area of a circle having the same diameter as the outer diameter D. The opening 8 is formed in a diamond shape with four rounded corners, a part of the peripheral edge 9 is in contact with the base 3 a of the straw 3, and the other part is not in contact with the straw 3. As a result, a gap is formed between the outer peripheral surface of the straw 3 and the peripheral edge 9. A part of the peripheral edge 9 in contact with the straw 3 is configured as a pair of support parts 10 and 10. Each support part 10 can support the straw 3 from one of the radially outer sides of the straw 3 (upper side in FIG. 3) and the other side (lower side in FIG. 3) on the opposite side. The contact surface 10 a of each support portion 10 is configured to continuously contact the straw 3 along the outer periphery of the straw 3. In other words, the contact surface 10 a of each support portion 10 is configured by a curved surface having the same curvature as the outer peripheral surface of the straw 3.

  As shown in FIG. 4, each supporting portion 10 is not pushed and bent inside the container main body 2 by the insertion even when the straw 3 is inserted into the container main body 2, and each contact surface 10 a contacts the straw 3. And are configured to face each other. That is, the distance X between the contact surfaces 10a is appropriately set so that the support portions 10 are not pushed and bent by the insertion of the straw 3. This distance X is a distance between the contact surfaces 10 a defined with respect to a direction orthogonal to the longitudinal center line of the straw 3. 4, the distance X is set to be substantially the same as the outer diameter D of the straw 3 for each position of the contact surface 10a. The processing accuracy of the opening 8 and the straw 3, the container body 2 and the straw 3 is set to an appropriate value in consideration of various conditions such as the material.

  5 is an enlarged plan view showing a part of the upper wall 7 in a state where the opening 8 is closed by the lid tape 12, and FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. . As shown in these drawings, the opening 8 is closed from the outside of the container body 2 by the lid tape 12 and from the inside of the container body 2 by an inner tape 13 as a film-like member. The inner tape 13 is made of a synthetic resin film such as polyethylene having water resistance. As shown in FIG. 6, the lid tape 12 is affixed to the upper wall 7 of the container main body 2 and is also affixed to the exposed portion 13 a of the inner adhesive tape 13 exposed to the outside of the container main body 2 from the opening 8.

  The paper container 1 is configured such that when the lid tape 12 is peeled for opening, the exposed portion 13 a is separated from the inner tape 13 with the exposed portion 13 a attached to the lid tape 12. That is, the mechanical strength of the inner tape 13 and the adhesive strength between the lid tape 12 and the exposed portion 13a are set so that the exposed portion 13a is separated from the inner tape 13 as the lid tape 12 is peeled off. ing. Thereby, it is prevented that the inner beverage permeates from the peripheral edge 9 of the opening 8 and the peripheral edge 9 is soiled. Moreover, since the contact with the peripheral part 9 and a drink is cut | disconnected, it is effective also in terms of hygiene.

  According to the paper container of the first embodiment, the pair of support portions 10 and 10 are supported from both sides of the straw 3, and are continuously in contact with the outer periphery of the straw 3, so that the inserted straw 3 is opened. 8 and the stability of the straw 3 is improved. Further, since each support portion 10 is not pushed and bent into the inside of the container main body 2 by inserting the straw 3, the contact surfaces 10a face each other, so that no excessive force is applied when the straw 3 is inserted. The generation of paper dust from can be suppressed.

(Second form)
Next, a second embodiment of the present invention will be described with reference to FIGS. The second form is the same as the first form except for the configuration of the opening. Therefore, the above description is referred to for the same configuration as the first embodiment. Moreover, about the same structure as the 1st form, the same code | symbol is attached | subjected to FIG.7 and FIG.8. 7 is an enlarged plan view showing a part of the upper wall 7 in a state where the straw 3 is inserted into the opening 15 according to the second embodiment, and FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. FIG. As shown in FIG. 7, an opening 15 larger than the outer diameter D of the straw 3 is formed in the upper wall 7. That is, the opening 15 has an opening area larger than the area of a circle having the same diameter as the outer diameter D. The opening 15 is formed in a square shape having four rounded corners, and a part of the peripheral edge 16 is in contact with the base 3 a of the straw 3 and the other part is not in contact with the straw 3.

  The peripheral edge portion 16 and the straw 3 are partially in contact with each other at four locations of contact portions P1, P2, P3, and P4. The contact portions P1 to P4 are arranged at regular intervals (every 90 °) in the circumferential direction of the straw 3. A portion that continues from the contact portion P1 to the contact portion P2 in the peripheral portion 16 and a portion that continues from the contact portion P3 to the contact portion P4 in the peripheral portion 16 function as a pair of support portions 17. 7 includes a contact portion P1 and a contact portion P2, and a contact surface 17a of the lower support portion 17 in FIG. 7 includes a contact portion P3 and a contact portion P4.

  As shown in FIG. 8, even when the straws 3 are inserted into the container body 2, the respective support portions 17 are not pushed and bent toward the inside of the container body 2 by the insertion, and their respective contact surfaces 17 a face each other. Configured as follows. That is, as in the first embodiment, the distance X between the contact surfaces 17a is appropriately set so that the support portions 17 are not pushed and bent by the insertion of the straw 3. In the case of the form of FIG. 8, this distance X is set to be substantially the same as the outer diameter D of the straw 3 with respect to the contact portion P1 of one contact surface 17a and the contact portion P4 of the other contact surface 17a. The same applies to the contact portion P2 and the contact portion P3. The appropriate value of the distance X is set in consideration of various conditions such as the processing accuracy of the opening 15 and the straw 3 and the material of the container body 2 and the straw 3.

  According to the paper container of the second form, the contact between the contact surfaces 17a of the pair of support portions 17 and 17 and the straw 3 is so-called point contact, so that it contacts the straw in a wide range as in the first form. Compared to the form, the allowable range for the error of the outer diameter of the straw 3 is expanded. As a result, there is a margin in the dimensional accuracy of the straw 3 and the dimensional accuracy of the opening 15, so that the manufacturing cost can be reduced. Furthermore, since the contact portions P1 to P4 between the straw 3 and each contact surface 17a are arranged at equal intervals in the circumferential direction of the straw 3, the stability of the straw is enhanced.

  This invention is not limited to the above form, It can implement with a various form within the range of the summary of this invention. In each embodiment described above, the inner tape 13 (see FIG. 6) as a film member that closes the opening 8 (opening 15) from the inside of the container body 2 is applied. You may make it close the opening part 8 (opening part 15) only with the tape 12. FIG.

  The shape of the opening described above is merely an example, and the present invention can be implemented with openings having various shapes. 9 and 10 are explanatory views showing other forms of the opening. As shown in FIG. 9, the opening 20 includes an insertion hole 21 into which the straw 3 is inserted, and an air vent hole 22 that is formed following the insertion hole 21 to secure a gap. Part of the peripheral edge 23 of the opening 20 functions as a pair of support parts 24, 24 so that the contact surfaces 24 a of the support parts 24 face each other when the straw 3 is supported by the support parts 24. Composed. In this case, the size relationship between the insertion hole 21 and the air vent hole 22 is arbitrary, and the air vent hole 22 may be larger than the insertion hole 21, contrary to FIG. 9. The shape of the air vent hole 22 is not limited to the circular shape shown in the figure, and the air vent hole 22 may be formed in a diamond shape, for example. Further, as shown in FIG. 10, two or more insertion holes 21 can be connected to the air vent hole 22. In this case, by attaching a plurality of straws 3 to the container body 2, it becomes possible for two or more people to drink at the same time.

The perspective view which showed the drink paper container which concerns on one form of this invention. The figure which showed the detail of the straw shown in FIG. The enlarged plan view which showed a part of upper wall in the state where the straw was inserted in the opening part. Sectional drawing along the IV-IV line of FIG. The enlarged plan view which showed a part of upper wall in the state by which the opening part was block | closed with the lid tape. Sectional drawing along the VI-VI line of FIG. The enlarged plan view which showed a part of upper wall in the state in which the straw was inserted in the opening part which concerns on a 2nd form. Sectional drawing along the VIII-VIII line of FIG. Explanatory drawing which showed the other form of the opening part. Explanatory drawing which showed the other form different from the opening part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drink paper container 2 Container main body 3 Straw 8, 15, 20 Opening part 9, 16, 23 Peripheral part 10, 17, 24 Support part 10a, 17a, 24a Contact surface 12 Lid tape (lid member)
13 Inner tape (film-like member)
13a Exposed part D Outer diameter P1-P4 Contact part

Claims (5)

A straw for a user to drink a beverage contained therein is attached in a detachable state, and includes a container body formed of paper as a raw material, the straw removed from the container body can be inserted, and In the beverage paper container in which an opening larger than the outer diameter of the straw is formed in the container body,
A part of the peripheral edge of the opening is configured as a support that can support the straw from the outside in the radial direction of the straw, and the support has a contact surface that contacts the straw. Paper container.   The beverage paper container according to claim 1, wherein the contact surface of the support portion is configured to continuously contact the straw along an outer periphery of the straw. The support portion is configured as a pair of support portions that can support the straw from one of the radially outer sides of the straw and the other of the other side, and has the contact surface that contacts the straw,
The contact surfaces of the pair of support portions are configured to face each other when the straw is supported and to partially contact the outer peripheral surface of the straw. Beverage paper container.   The contact surfaces of the pair of support portions are configured such that contact portions between the outer peripheral surfaces of the straws and the contact surfaces of the pair of support portions are arranged at equal intervals in the circumferential direction of the straw. The beverage paper container according to claim 3. A film-like member that closes the opening from the inside of the container body, and the film that is exposed to the outside of the container body from the opening so as to close the opening from the outside of the container body. A lid member attached to the exposed portion of the shaped member,
The mechanical strength of the film-like member and the lid member and the exposed portion are separated from the film-like member with the exposed portion attached to the lid member when the lid member is peeled from the container body. The beverage paper container according to any one of claims 1 to 4, wherein an adhesive strength with each other is set.

Images